All rubber anti vibration parts will break up and degrade over the years. They are put there for a reason, to stop vibration damaging the component they are protecting. It is much cheaper to renew these parts regularly, rather then replace the much more expensive item they were there to protect! For all your Honda mini bike requirements, take a look the 'Mini bike' section of our web site. We probably sell more for these types of Hondas than any other European specialist!